Swen Schillig | 41fa2ad | 2007-09-07 09:15:31 +0200 | [diff] [blame] | 1 | /* |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 2 | * zfcp device driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 4 | * Interface to Linux SCSI midlayer. |
Swen Schillig | 41fa2ad | 2007-09-07 09:15:31 +0200 | [diff] [blame] | 5 | * |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 6 | * Copyright IBM Corporation 2002, 2010 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Christof Schmitt | ecf39d4 | 2008-12-25 13:39:53 +0100 | [diff] [blame] | 9 | #define KMSG_COMPONENT "zfcp" |
| 10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
| 11 | |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 12 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 13 | #include <linux/slab.h> |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 14 | #include <scsi/fc/fc_fcp.h> |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 15 | #include <scsi/scsi_eh.h> |
Christof Schmitt | 5f852be | 2007-05-08 11:16:52 +0200 | [diff] [blame] | 16 | #include <asm/atomic.h> |
Christof Schmitt | dcd20e2 | 2009-08-18 15:43:08 +0200 | [diff] [blame] | 17 | #include "zfcp_ext.h" |
| 18 | #include "zfcp_dbf.h" |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 19 | #include "zfcp_fc.h" |
Christof Schmitt | b6bd2fb | 2010-02-17 11:18:50 +0100 | [diff] [blame] | 20 | #include "zfcp_reqlist.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 22 | static unsigned int default_depth = 32; |
| 23 | module_param_named(queue_depth, default_depth, uint, 0600); |
| 24 | MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices"); |
| 25 | |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 26 | static bool enable_dif; |
| 27 | |
| 28 | #ifdef CONFIG_ZFCP_DIF |
| 29 | module_param_named(dif, enable_dif, bool, 0600); |
| 30 | MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support"); |
| 31 | #endif |
| 32 | |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 33 | static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth, |
| 34 | int reason) |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 35 | { |
Christof Schmitt | 42e62a7 | 2009-10-15 17:47:11 -0700 | [diff] [blame] | 36 | switch (reason) { |
| 37 | case SCSI_QDEPTH_DEFAULT: |
| 38 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); |
| 39 | break; |
| 40 | case SCSI_QDEPTH_QFULL: |
| 41 | scsi_track_queue_full(sdev, depth); |
| 42 | break; |
| 43 | case SCSI_QDEPTH_RAMP_UP: |
| 44 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth); |
| 45 | break; |
| 46 | default: |
Mike Christie | e881a17 | 2009-10-15 17:46:39 -0700 | [diff] [blame] | 47 | return -EOPNOTSUPP; |
Christof Schmitt | 42e62a7 | 2009-10-15 17:47:11 -0700 | [diff] [blame] | 48 | } |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 49 | return sdev->queue_depth; |
| 50 | } |
| 51 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 52 | static void zfcp_scsi_slave_destroy(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 54 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
| 55 | |
| 56 | zfcp_erp_lun_shutdown_wait(sdev, "scssd_1"); |
| 57 | put_device(&zfcp_sdev->port->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | } |
| 59 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 60 | static int zfcp_scsi_slave_configure(struct scsi_device *sdp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
| 62 | if (sdp->tagged_supported) |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 63 | scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | else |
| 65 | scsi_adjust_queue_depth(sdp, 0, 1); |
| 66 | return 0; |
| 67 | } |
| 68 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 69 | static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 71 | set_host_byte(scpnt, result); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 72 | zfcp_dbf_scsi_fail_send(scpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | scpnt->scsi_done(scpnt); |
| 74 | } |
| 75 | |
Christof Schmitt | e55f875 | 2010-11-18 14:53:18 +0100 | [diff] [blame] | 76 | static |
| 77 | int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 79 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 80 | struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device)); |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 81 | int status, scsi_result, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | /* reset the status for this request */ |
| 84 | scpnt->result = 0; |
| 85 | scpnt->host_scribble = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 87 | scsi_result = fc_remote_port_chkready(rport); |
| 88 | if (unlikely(scsi_result)) { |
| 89 | scpnt->result = scsi_result; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 90 | zfcp_dbf_scsi_fail_send(scpnt); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 91 | scpnt->scsi_done(scpnt); |
| 92 | return 0; |
| 93 | } |
| 94 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 95 | status = atomic_read(&zfcp_sdev->status); |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 96 | if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) && |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 97 | !(atomic_read(&zfcp_sdev->port->status) & |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 98 | ZFCP_STATUS_COMMON_ERP_FAILED)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 99 | /* only LUN access denied, but port is good |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 100 | * not covered by FC transport, have to fail here */ |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 101 | zfcp_scsi_command_fail(scpnt, DID_ERROR); |
Joe Perches | a419aef | 2009-08-18 11:18:35 -0700 | [diff] [blame] | 102 | return 0; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 103 | } |
| 104 | |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 105 | if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) { |
| 106 | /* This could be either |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 107 | * open LUN pending: this is temporary, will result in |
| 108 | * open LUN or ERP_FAILED, so retry command |
Christof Schmitt | 8830271 | 2009-11-24 16:54:07 +0100 | [diff] [blame] | 109 | * call to rport_delete pending: mimic retry from |
| 110 | * fc_remote_port_chkready until rport is BLOCKED |
| 111 | */ |
| 112 | zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY); |
| 113 | return 0; |
| 114 | } |
| 115 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 116 | ret = zfcp_fsf_fcp_cmnd(scpnt); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 117 | if (unlikely(ret == -EBUSY)) |
Swen Schillig | f7a65e9 | 2008-11-27 11:44:07 +0100 | [diff] [blame] | 118 | return SCSI_MLQUEUE_DEVICE_BUSY; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 119 | else if (unlikely(ret < 0)) |
| 120 | return SCSI_MLQUEUE_HOST_BUSY; |
| 121 | |
| 122 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 125 | static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 127 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
| 128 | struct zfcp_adapter *adapter = |
| 129 | (struct zfcp_adapter *) sdev->host->hostdata[0]; |
| 130 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | struct zfcp_port *port; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 132 | struct zfcp_unit *unit; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 133 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 134 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
| 135 | if (!port) |
| 136 | return -ENXIO; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 137 | |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 138 | unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev)); |
| 139 | if (unit) |
| 140 | put_device(&unit->dev); |
Christof Schmitt | f8210e3 | 2010-09-08 14:39:56 +0200 | [diff] [blame] | 141 | |
| 142 | if (!unit && !(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 143 | put_device(&port->dev); |
| 144 | return -ENXIO; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 145 | } |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 146 | |
| 147 | zfcp_sdev->port = port; |
| 148 | zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF; |
| 149 | zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF; |
| 150 | zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF; |
| 151 | zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF; |
| 152 | zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF; |
| 153 | zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF; |
| 154 | spin_lock_init(&zfcp_sdev->latencies.lock); |
| 155 | |
Swen Schillig | edaed85 | 2010-09-08 14:40:01 +0200 | [diff] [blame] | 156 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 157 | zfcp_erp_lun_reopen(sdev, 0, "scsla_1", NULL); |
| 158 | zfcp_erp_wait(port->adapter); |
| 159 | |
| 160 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | } |
| 162 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 163 | static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | { |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 165 | struct Scsi_Host *scsi_host = scpnt->device->host; |
| 166 | struct zfcp_adapter *adapter = |
| 167 | (struct zfcp_adapter *) scsi_host->hostdata[0]; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 168 | struct zfcp_fsf_req *old_req, *abrt_req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | unsigned long flags; |
Christof Schmitt | a11a52b | 2009-07-13 15:06:14 +0200 | [diff] [blame] | 170 | unsigned long old_reqid = (unsigned long) scpnt->host_scribble; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 171 | int retval = SUCCESS, ret; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 172 | int retry = 3; |
Christof Schmitt | a11a52b | 2009-07-13 15:06:14 +0200 | [diff] [blame] | 173 | char *dbf_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 175 | /* avoid race condition between late normal completion and abort */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | write_lock_irqsave(&adapter->abort_lock, flags); |
| 177 | |
Christof Schmitt | b6bd2fb | 2010-02-17 11:18:50 +0100 | [diff] [blame] | 178 | old_req = zfcp_reqlist_find(adapter->req_list, old_reqid); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 179 | if (!old_req) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 181 | zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL); |
Christof Schmitt | c6936e7 | 2009-04-17 15:08:11 +0200 | [diff] [blame] | 182 | return FAILED; /* completion could be in progress */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 184 | old_req->data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 186 | /* don't access old fsf_req after releasing the abort_lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
Andreas Herrmann | 4eff4a3 | 2006-09-18 22:29:20 +0200 | [diff] [blame] | 188 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 189 | while (retry--) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 190 | abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 191 | if (abrt_req) |
| 192 | break; |
| 193 | |
| 194 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 195 | ret = fc_block_scsi_eh(scpnt); |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 196 | if (ret) { |
| 197 | zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 198 | return ret; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 199 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 200 | if (!(atomic_read(&adapter->status) & |
| 201 | ZFCP_STATUS_COMMON_RUNNING)) { |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 202 | zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 203 | return SUCCESS; |
| 204 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 206 | if (!abrt_req) { |
| 207 | zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 208 | return FAILED; |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 209 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Swen Schillig | 058b864 | 2009-08-18 15:43:14 +0200 | [diff] [blame] | 211 | wait_for_completion(&abrt_req->completion); |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 212 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 213 | if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 214 | dbf_tag = "abrt_ok"; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 215 | else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 216 | dbf_tag = "abrt_nn"; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 217 | else { |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 218 | dbf_tag = "abrt_fa"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | retval = FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
Swen Schillig | 250a135 | 2010-12-02 15:16:15 +0100 | [diff] [blame^] | 221 | zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 222 | zfcp_fsf_req_free(abrt_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | return retval; |
| 224 | } |
| 225 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 226 | static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 228 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
| 229 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 230 | struct zfcp_fsf_req *fsf_req = NULL; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 231 | int retval = SUCCESS, ret; |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 232 | int retry = 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 234 | while (retry--) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 235 | fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 236 | if (fsf_req) |
| 237 | break; |
| 238 | |
| 239 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 240 | ret = fc_block_scsi_eh(scpnt); |
| 241 | if (ret) |
| 242 | return ret; |
| 243 | |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 244 | if (!(atomic_read(&adapter->status) & |
| 245 | ZFCP_STATUS_COMMON_RUNNING)) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 246 | zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags); |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 247 | return SUCCESS; |
| 248 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | } |
Christof Schmitt | 63caf36 | 2009-03-02 13:09:00 +0100 | [diff] [blame] | 250 | if (!fsf_req) |
| 251 | return FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Swen Schillig | 058b864 | 2009-08-18 15:43:14 +0200 | [diff] [blame] | 253 | wait_for_completion(&fsf_req->completion); |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 254 | |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 255 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 256 | zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 257 | retval = FAILED; |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 258 | } else |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 259 | zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags); |
Andreas Herrmann | 77eb169 | 2005-09-13 21:48:33 +0200 | [diff] [blame] | 260 | |
| 261 | zfcp_fsf_req_free(fsf_req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | return retval; |
| 263 | } |
| 264 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 265 | static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) |
| 266 | { |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 267 | return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) |
| 271 | { |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 272 | return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 273 | } |
| 274 | |
Heiko Carstens | 2b67fc4 | 2007-02-05 21:16:47 +0100 | [diff] [blame] | 275 | static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | { |
Christof Schmitt | b62a8d9 | 2010-09-08 14:39:55 +0200 | [diff] [blame] | 277 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
| 278 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 279 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Swen Schillig | 5ffd51a | 2009-03-02 13:09:04 +0100 | [diff] [blame] | 281 | zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt); |
Andreas Herrmann | 8165428 | 2006-09-18 22:30:36 +0200 | [diff] [blame] | 282 | zfcp_erp_wait(adapter); |
Christof Schmitt | a1dbfdd | 2010-03-24 16:50:31 +0100 | [diff] [blame] | 283 | ret = fc_block_scsi_eh(scpnt); |
| 284 | if (ret) |
| 285 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Andreas Herrmann | 810f1e3e | 2005-09-13 21:49:52 +0200 | [diff] [blame] | 287 | return SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 290 | int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 292 | struct ccw_dev_id dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 294 | if (adapter->scsi_host) |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 295 | return 0; |
Michael Loehr | 9f28745 | 2007-05-09 11:01:24 +0200 | [diff] [blame] | 296 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 297 | ccw_device_get_id(adapter->ccw_device, &dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | /* register adapter as SCSI host with mid layer of SCSI stack */ |
| 299 | adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template, |
| 300 | sizeof (struct zfcp_adapter *)); |
| 301 | if (!adapter->scsi_host) { |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 302 | dev_err(&adapter->ccw_device->dev, |
Christof Schmitt | ff3b24f | 2008-10-01 12:42:15 +0200 | [diff] [blame] | 303 | "Registering the FCP device with the " |
| 304 | "SCSI stack failed\n"); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 305 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| 308 | /* tell the SCSI stack some characteristics of this adapter */ |
Christof Schmitt | f8210e3 | 2010-09-08 14:39:56 +0200 | [diff] [blame] | 309 | adapter->scsi_host->max_id = 511; |
| 310 | adapter->scsi_host->max_lun = 0xFFFFFFFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | adapter->scsi_host->max_channel = 0; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 312 | adapter->scsi_host->unique_id = dev_id.devno; |
Christof Schmitt | 4318e08 | 2009-11-24 16:54:08 +0100 | [diff] [blame] | 313 | adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */ |
Heiko Carstens | dd52e0e | 2006-09-18 22:28:49 +0200 | [diff] [blame] | 314 | adapter->scsi_host->transportt = zfcp_data.scsi_transport_template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | adapter->scsi_host->hostdata[0] = (unsigned long) adapter; |
| 317 | |
| 318 | if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { |
| 319 | scsi_host_put(adapter->scsi_host); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 320 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 322 | |
| 323 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | } |
| 325 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 326 | void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | { |
| 328 | struct Scsi_Host *shost; |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 329 | struct zfcp_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
| 331 | shost = adapter->scsi_host; |
| 332 | if (!shost) |
| 333 | return; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 334 | |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 335 | read_lock_irq(&adapter->port_list_lock); |
| 336 | list_for_each_entry(port, &adapter->port_list, list) |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 337 | port->rport = NULL; |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 338 | read_unlock_irq(&adapter->port_list_lock); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 339 | |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 340 | fc_remove_host(shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | scsi_remove_host(shost); |
| 342 | scsi_host_put(shost); |
| 343 | adapter->scsi_host = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | return; |
| 346 | } |
| 347 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 348 | static struct fc_host_statistics* |
| 349 | zfcp_init_fc_host_stats(struct zfcp_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 351 | struct fc_host_statistics *fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 353 | if (!adapter->fc_stats) { |
| 354 | fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); |
| 355 | if (!fc_stats) |
| 356 | return NULL; |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 357 | adapter->fc_stats = fc_stats; /* freed in adapter_release */ |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 358 | } |
| 359 | memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); |
| 360 | return adapter->fc_stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 363 | static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 364 | struct fsf_qtcb_bottom_port *data, |
| 365 | struct fsf_qtcb_bottom_port *old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | { |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 367 | fc_stats->seconds_since_last_reset = |
| 368 | data->seconds_since_last_reset - old->seconds_since_last_reset; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 369 | fc_stats->tx_frames = data->tx_frames - old->tx_frames; |
| 370 | fc_stats->tx_words = data->tx_words - old->tx_words; |
| 371 | fc_stats->rx_frames = data->rx_frames - old->rx_frames; |
| 372 | fc_stats->rx_words = data->rx_words - old->rx_words; |
| 373 | fc_stats->lip_count = data->lip - old->lip; |
| 374 | fc_stats->nos_count = data->nos - old->nos; |
| 375 | fc_stats->error_frames = data->error_frames - old->error_frames; |
| 376 | fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; |
| 377 | fc_stats->link_failure_count = data->link_failure - old->link_failure; |
| 378 | fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 379 | fc_stats->loss_of_signal_count = |
| 380 | data->loss_of_signal - old->loss_of_signal; |
| 381 | fc_stats->prim_seq_protocol_err_count = |
| 382 | data->psp_error_counts - old->psp_error_counts; |
| 383 | fc_stats->invalid_tx_word_count = |
| 384 | data->invalid_tx_words - old->invalid_tx_words; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 385 | fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 386 | fc_stats->fcp_input_requests = |
| 387 | data->input_requests - old->input_requests; |
| 388 | fc_stats->fcp_output_requests = |
| 389 | data->output_requests - old->output_requests; |
| 390 | fc_stats->fcp_control_requests = |
| 391 | data->control_requests - old->control_requests; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 392 | fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; |
| 393 | fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 396 | static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats, |
| 397 | struct fsf_qtcb_bottom_port *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 399 | fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; |
| 400 | fc_stats->tx_frames = data->tx_frames; |
| 401 | fc_stats->tx_words = data->tx_words; |
| 402 | fc_stats->rx_frames = data->rx_frames; |
| 403 | fc_stats->rx_words = data->rx_words; |
| 404 | fc_stats->lip_count = data->lip; |
| 405 | fc_stats->nos_count = data->nos; |
| 406 | fc_stats->error_frames = data->error_frames; |
| 407 | fc_stats->dumped_frames = data->dumped_frames; |
| 408 | fc_stats->link_failure_count = data->link_failure; |
| 409 | fc_stats->loss_of_sync_count = data->loss_of_sync; |
| 410 | fc_stats->loss_of_signal_count = data->loss_of_signal; |
| 411 | fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; |
| 412 | fc_stats->invalid_tx_word_count = data->invalid_tx_words; |
| 413 | fc_stats->invalid_crc_count = data->invalid_crcs; |
| 414 | fc_stats->fcp_input_requests = data->input_requests; |
| 415 | fc_stats->fcp_output_requests = data->output_requests; |
| 416 | fc_stats->fcp_control_requests = data->control_requests; |
| 417 | fc_stats->fcp_input_megabytes = data->input_mb; |
| 418 | fc_stats->fcp_output_megabytes = data->output_mb; |
| 419 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 421 | static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 422 | { |
| 423 | struct zfcp_adapter *adapter; |
| 424 | struct fc_host_statistics *fc_stats; |
| 425 | struct fsf_qtcb_bottom_port *data; |
| 426 | int ret; |
| 427 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 428 | adapter = (struct zfcp_adapter *)host->hostdata[0]; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 429 | fc_stats = zfcp_init_fc_host_stats(adapter); |
| 430 | if (!fc_stats) |
| 431 | return NULL; |
| 432 | |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 433 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 434 | if (!data) |
| 435 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 436 | |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 437 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 438 | if (ret) { |
| 439 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 440 | return NULL; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | if (adapter->stats_reset && |
| 444 | ((jiffies/HZ - adapter->stats_reset) < |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 445 | data->seconds_since_last_reset)) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 446 | zfcp_adjust_fc_host_stats(fc_stats, data, |
| 447 | adapter->stats_reset_data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 448 | else |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 449 | zfcp_set_fc_host_stats(fc_stats, data); |
| 450 | |
| 451 | kfree(data); |
| 452 | return fc_stats; |
| 453 | } |
| 454 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 455 | static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost) |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 456 | { |
| 457 | struct zfcp_adapter *adapter; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 458 | struct fsf_qtcb_bottom_port *data; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 459 | int ret; |
| 460 | |
| 461 | adapter = (struct zfcp_adapter *)shost->hostdata[0]; |
Andreas Herrmann | ec4081c | 2006-05-22 18:17:30 +0200 | [diff] [blame] | 462 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 463 | if (!data) |
| 464 | return; |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 465 | |
Swen Schillig | 564e1c8 | 2009-08-18 15:43:19 +0200 | [diff] [blame] | 466 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 467 | if (ret) |
Heiko Carstens | 83f6d6d | 2007-08-08 10:47:02 +0200 | [diff] [blame] | 468 | kfree(data); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 469 | else { |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 470 | adapter->stats_reset = jiffies/HZ; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 471 | kfree(adapter->stats_reset_data); |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 472 | adapter->stats_reset_data = data; /* finally freed in |
Swen Schillig | f3450c7 | 2009-11-24 16:53:59 +0100 | [diff] [blame] | 473 | adapter_release */ |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 474 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
| 476 | |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 477 | static void zfcp_get_host_port_state(struct Scsi_Host *shost) |
| 478 | { |
| 479 | struct zfcp_adapter *adapter = |
| 480 | (struct zfcp_adapter *)shost->hostdata[0]; |
| 481 | int status = atomic_read(&adapter->status); |
| 482 | |
| 483 | if ((status & ZFCP_STATUS_COMMON_RUNNING) && |
| 484 | !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) |
| 485 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; |
| 486 | else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
| 487 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; |
| 488 | else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) |
| 489 | fc_host_port_state(shost) = FC_PORTSTATE_ERROR; |
| 490 | else |
| 491 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; |
| 492 | } |
| 493 | |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 494 | static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) |
| 495 | { |
| 496 | rport->dev_loss_tmo = timeout; |
| 497 | } |
| 498 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 499 | /** |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 500 | * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport |
| 501 | * @rport: The FC rport where to teminate I/O |
| 502 | * |
| 503 | * Abort all pending SCSI commands for a port by closing the |
Christof Schmitt | 835dc29 | 2010-07-08 09:53:08 +0200 | [diff] [blame] | 504 | * port. Using a reopen avoids a conflict with a shutdown |
| 505 | * overwriting a reopen. The "forced" ensures that a disappeared port |
| 506 | * is not opened again as valid due to the cached plogi data in |
| 507 | * non-NPIV mode. |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 508 | */ |
| 509 | static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) |
| 510 | { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 511 | struct zfcp_port *port; |
Swen Schillig | ea945ff | 2009-08-18 15:43:24 +0200 | [diff] [blame] | 512 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 513 | struct zfcp_adapter *adapter = |
| 514 | (struct zfcp_adapter *)shost->hostdata[0]; |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 515 | |
Swen Schillig | ea945ff | 2009-08-18 15:43:24 +0200 | [diff] [blame] | 516 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 517 | |
| 518 | if (port) { |
Christof Schmitt | 835dc29 | 2010-07-08 09:53:08 +0200 | [diff] [blame] | 519 | zfcp_erp_port_forced_reopen(port, 0, "sctrpi1", NULL); |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 520 | put_device(&port->dev); |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 521 | } |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | static void zfcp_scsi_rport_register(struct zfcp_port *port) |
| 525 | { |
| 526 | struct fc_rport_identifiers ids; |
| 527 | struct fc_rport *rport; |
| 528 | |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 529 | if (port->rport) |
| 530 | return; |
| 531 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 532 | ids.node_name = port->wwnn; |
| 533 | ids.port_name = port->wwpn; |
| 534 | ids.port_id = port->d_id; |
| 535 | ids.roles = FC_RPORT_ROLE_FCP_TARGET; |
| 536 | |
| 537 | rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); |
| 538 | if (!rport) { |
| 539 | dev_err(&port->adapter->ccw_device->dev, |
| 540 | "Registering port 0x%016Lx failed\n", |
| 541 | (unsigned long long)port->wwpn); |
| 542 | return; |
| 543 | } |
| 544 | |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 545 | rport->maxframe_size = port->maxframe_size; |
| 546 | rport->supported_classes = port->supported_classes; |
| 547 | port->rport = rport; |
Christof Schmitt | 1bf3ff0 | 2010-07-16 15:37:35 +0200 | [diff] [blame] | 548 | port->starget_id = rport->scsi_target_id; |
Christof Schmitt | 5a7de55 | 2010-07-08 09:53:07 +0200 | [diff] [blame] | 549 | |
Christof Schmitt | 1daa4eb | 2010-09-08 14:39:52 +0200 | [diff] [blame] | 550 | zfcp_unit_queue_scsi_scan(port); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | static void zfcp_scsi_rport_block(struct zfcp_port *port) |
| 554 | { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 555 | struct fc_rport *rport = port->rport; |
| 556 | |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 557 | if (rport) { |
Christof Schmitt | 7093293 | 2009-04-17 15:08:15 +0200 | [diff] [blame] | 558 | fc_remote_port_delete(rport); |
Christof Schmitt | 379d6bf | 2009-07-13 15:06:11 +0200 | [diff] [blame] | 559 | port->rport = NULL; |
| 560 | } |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) |
| 564 | { |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 565 | get_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 566 | port->rport_task = RPORT_ADD; |
| 567 | |
Swen Schillig | 4544683 | 2009-08-18 15:43:17 +0200 | [diff] [blame] | 568 | if (!queue_work(port->adapter->work_queue, &port->rport_work)) |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 569 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) |
| 573 | { |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 574 | get_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 575 | port->rport_task = RPORT_DEL; |
| 576 | |
Swen Schillig | 4544683 | 2009-08-18 15:43:17 +0200 | [diff] [blame] | 577 | if (port->rport && queue_work(port->adapter->work_queue, |
| 578 | &port->rport_work)) |
Swen Schillig | a67417a | 2009-08-18 15:43:06 +0200 | [diff] [blame] | 579 | return; |
| 580 | |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 581 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) |
| 585 | { |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 586 | unsigned long flags; |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 587 | struct zfcp_port *port; |
| 588 | |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 589 | read_lock_irqsave(&adapter->port_list_lock, flags); |
| 590 | list_for_each_entry(port, &adapter->port_list, list) |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 591 | zfcp_scsi_schedule_rport_block(port); |
Swen Schillig | ecf0c77 | 2009-11-24 16:53:58 +0100 | [diff] [blame] | 592 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | void zfcp_scsi_rport_work(struct work_struct *work) |
| 596 | { |
| 597 | struct zfcp_port *port = container_of(work, struct zfcp_port, |
| 598 | rport_work); |
| 599 | |
| 600 | while (port->rport_task) { |
| 601 | if (port->rport_task == RPORT_ADD) { |
| 602 | port->rport_task = RPORT_NONE; |
| 603 | zfcp_scsi_rport_register(port); |
| 604 | } else { |
| 605 | port->rport_task = RPORT_NONE; |
| 606 | zfcp_scsi_rport_block(port); |
| 607 | } |
| 608 | } |
| 609 | |
Christof Schmitt | 615f59e | 2010-02-17 11:18:56 +0100 | [diff] [blame] | 610 | put_device(&port->dev); |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 611 | } |
| 612 | |
Christof Schmitt | 5a7de55 | 2010-07-08 09:53:07 +0200 | [diff] [blame] | 613 | /** |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 614 | * zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host |
| 615 | * @adapter: The adapter where to configure DIF/DIX for the SCSI host |
| 616 | */ |
| 617 | void zfcp_scsi_set_prot(struct zfcp_adapter *adapter) |
| 618 | { |
| 619 | unsigned int mask = 0; |
| 620 | unsigned int data_div; |
| 621 | struct Scsi_Host *shost = adapter->scsi_host; |
| 622 | |
| 623 | data_div = atomic_read(&adapter->status) & |
| 624 | ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED; |
| 625 | |
| 626 | if (enable_dif && |
| 627 | adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1) |
| 628 | mask |= SHOST_DIF_TYPE1_PROTECTION; |
| 629 | |
| 630 | if (enable_dif && data_div && |
| 631 | adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) { |
| 632 | mask |= SHOST_DIX_TYPE1_PROTECTION; |
| 633 | scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP); |
Christof Schmitt | 175b79f | 2010-09-10 20:50:40 +0200 | [diff] [blame] | 634 | shost->sg_prot_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2; |
Felix Beck | ef3eb71 | 2010-07-16 15:37:42 +0200 | [diff] [blame] | 635 | shost->sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2; |
| 636 | shost->max_sectors = ZFCP_QDIO_MAX_SBALES_PER_REQ * 8 / 2; |
| 637 | } |
| 638 | |
| 639 | scsi_host_set_prot(shost, mask); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error |
| 644 | * @scmd: The SCSI command to report the error for |
| 645 | * @ascq: The ASCQ to put in the sense buffer |
| 646 | * |
| 647 | * See the error handling in sd_done for the sense codes used here. |
| 648 | * Set DID_SOFT_ERROR to retry the request, if possible. |
| 649 | */ |
| 650 | void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq) |
| 651 | { |
| 652 | scsi_build_sense_buffer(1, scmd->sense_buffer, |
| 653 | ILLEGAL_REQUEST, 0x10, ascq); |
| 654 | set_driver_byte(scmd, DRIVER_SENSE); |
| 655 | scmd->result |= SAM_STAT_CHECK_CONDITION; |
| 656 | set_host_byte(scmd, DID_SOFT_ERROR); |
| 657 | } |
| 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | struct fc_function_template zfcp_transport_functions = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | .show_starget_port_id = 1, |
| 661 | .show_starget_port_name = 1, |
| 662 | .show_starget_node_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 663 | .show_rport_supported_classes = 1, |
Ralph Wuerthner | 75bfc28 | 2006-05-22 18:24:33 +0200 | [diff] [blame] | 664 | .show_rport_maxframe_size = 1, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 665 | .show_rport_dev_loss_tmo = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 666 | .show_host_node_name = 1, |
| 667 | .show_host_port_name = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 668 | .show_host_permanent_port_name = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 669 | .show_host_supported_classes = 1, |
Christof Schmitt | 0fdd213 | 2009-11-24 16:54:17 +0100 | [diff] [blame] | 670 | .show_host_supported_fc4s = 1, |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 671 | .show_host_supported_speeds = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 672 | .show_host_maxframe_size = 1, |
Andreas Herrmann | 3859f6a | 2005-08-27 11:07:54 -0700 | [diff] [blame] | 673 | .show_host_serial_number = 1, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 674 | .get_fc_host_stats = zfcp_get_fc_host_stats, |
| 675 | .reset_fc_host_stats = zfcp_reset_fc_host_stats, |
Andreas Herrmann | 338151e | 2006-05-22 18:25:56 +0200 | [diff] [blame] | 676 | .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo, |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 677 | .get_host_port_state = zfcp_get_host_port_state, |
Christof Schmitt | a2fa0ae | 2009-03-02 13:09:08 +0100 | [diff] [blame] | 678 | .terminate_rport_io = zfcp_scsi_terminate_rport_io, |
Sven Schuetz | 85a8239 | 2008-06-10 18:20:59 +0200 | [diff] [blame] | 679 | .show_host_port_state = 1, |
Christof Schmitt | 0fdd213 | 2009-11-24 16:54:17 +0100 | [diff] [blame] | 680 | .show_host_active_fc4s = 1, |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 681 | .bsg_request = zfcp_fc_exec_bsg_job, |
Swen Schillig | 491ca44 | 2010-01-14 17:19:01 +0100 | [diff] [blame] | 682 | .bsg_timeout = zfcp_fc_timeout_bsg_job, |
Andreas Herrmann | f6cd94b | 2006-01-05 09:59:34 +0100 | [diff] [blame] | 683 | /* no functions registered for following dynamic attributes but |
| 684 | directly set by LLDD */ |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 685 | .show_host_port_type = 1, |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 686 | .show_host_speed = 1, |
| 687 | .show_host_port_id = 1, |
Christof Schmitt | 7c7dc19 | 2009-11-24 16:54:13 +0100 | [diff] [blame] | 688 | .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | }; |
| 690 | |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 691 | struct zfcp_data zfcp_data = { |
| 692 | .scsi_host_template = { |
| 693 | .name = "zfcp", |
| 694 | .module = THIS_MODULE, |
| 695 | .proc_name = "zfcp", |
Christof Schmitt | a40a1ba | 2009-05-15 13:18:16 +0200 | [diff] [blame] | 696 | .change_queue_depth = zfcp_scsi_change_queue_depth, |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 697 | .slave_alloc = zfcp_scsi_slave_alloc, |
| 698 | .slave_configure = zfcp_scsi_slave_configure, |
| 699 | .slave_destroy = zfcp_scsi_slave_destroy, |
| 700 | .queuecommand = zfcp_scsi_queuecommand, |
| 701 | .eh_abort_handler = zfcp_scsi_eh_abort_handler, |
| 702 | .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, |
| 703 | .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, |
| 704 | .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, |
| 705 | .can_queue = 4096, |
| 706 | .this_id = -1, |
Swen Schillig | 01b0475 | 2010-07-16 15:37:37 +0200 | [diff] [blame] | 707 | .sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ, |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 708 | .cmd_per_lun = 1, |
| 709 | .use_clustering = 1, |
| 710 | .sdev_attrs = zfcp_sysfs_sdev_attrs, |
Swen Schillig | 01b0475 | 2010-07-16 15:37:37 +0200 | [diff] [blame] | 711 | .max_sectors = (ZFCP_QDIO_MAX_SBALES_PER_REQ * 8), |
Christof Schmitt | 6832298 | 2010-04-30 18:09:33 +0200 | [diff] [blame] | 712 | .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1, |
Swen Schillig | 6022192 | 2008-07-02 10:56:38 +0200 | [diff] [blame] | 713 | .shost_attrs = zfcp_sysfs_shost_attrs, |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 714 | }, |
| 715 | }; |